Memory system for recording and reproducing block unit data

Abstract

There is provided a signal processing system for recording and reproducing a video signal and a digital audio signal with a rotary-head VTR and, more particularly, a memory control system which generates a block address and a memory write signal so that the sync signal for reproduced digital data is detected reliably and the digital data is stored in the memory circuit correctly.

What is claimed is: 
     
       1. A signal processing system for controlling recording and reproduction of block unit data which is adapted to be recorded at a predetermined position on a track of a magnetic tape and which includes digital data representing an information signal, a synchronizing signal and an address code indicative of an address value of a block unit in which said digital data is contained, said signal processing system comprising: address predicting means for predicting said address code in accordance with a rotational position of a rotary head which reproduces data recorded on the magnetic tape; reading means for reading said address code; address generation means for generating said address value in accordance with said sync signal; composed address value generation means for generating a composed address value on the basis of an output of said reading means and an output of said address generation means; first address value comparison means for comparing said composed address value with said predicted address code value; selection means for outputting said composed address value as an address value for accessing a memory circuit when a comparison error of said first address value comparison means is within a predetermined range; second address value comparison means for comparing the address value outputted from said selection means with said predicted address code value; and writing signal generation means for generating a writing signal for storing said digital data in said memory circuit when a comparison error of said second address value comparison means is within a predetermined range.